数学人民币的简单计算ppt课件.ppt

, , , 3- , , , , ,1= ,1= , ( ) 2,10,10,2,( ) ( ) ,1,2,5, ： 1 ,1 2 =（ ） ,12,_ _ ,3,8,_ ,38,=,_ ,26,=,_ _ ,2,6,1.20元,1,1.20,5,12,2,65,1,98,1 . 2 0 ,_ _ _ ,1,2,0,6,5 ,2 ,1 5 ,35 9 ,1.50 ,0.5,2.00,35.90,0.50 3.00 35.90 1.20 0.90 0.80 ,8 1 2 9 5 3 35 9 ,0.80 ,0.50 ,8 + 5 = 13 = 1 3 ,1.20 ,0.90 ,1 2 + 9 = 21 = 2 1 ,3.00 , 10 ,10 3 = 7 (),